Dental cotton holder



May 31,1927. l RJ' BERKINSHAW 1,630,729

DENTAL COTTON HOLDER Filed Marh 6. 1924,`

I? i 'n Patented May 31, 1927.

UNITED STATES ROBERT J'. BERKINSHAW, OF NIAGARA FALLS, NEW YORK.

'DENTAL COTTON HOLDER.

Application led. March 6, 1924.

This invention relates to aholder or container i'or cotton pellets or wade, suQll as are used by dent-ists and physicians.

lts primary object .is the provision ofa sanitary holder of this character which is constructed to contain pellets of various sizes, and which is provided with novel means for permitting Withdrawal oi' the` pellets, one at a time.

Another object ot' the invention is to provide a simple and inexpensive revolving holder of this kind whichis compact in con.u struction and yet comparatively large in capacity.

ln the accompanying drawings:

Figure 1 is a perspective view of the hold er, partly in section. Figure 2 is a vertical section thereof. Figures 3 and f1 are horiaontal sections on the correspondingly nu1nbered lines in Fig. 2.

Similar characters of reference indicate corresponding parts in the several views.

The holder and its associated parts are mounted upon a base or supporting member 10, preferably of circular form, which may be constructed of porcelain or other appropriate material, and which is provided with a top 11 of conical or other suitable shape. Located centrally of and extending vertically through this base is an opening 12 containing a bushing or bearing 13 which terminates at its upper end 1n a head or collar 111, which projects a suitable distance above the conical top of said base.

The holder proper is in the form of a receptacle rotatably supported on the head of said bushing and preferably comprises a base ring or section 15, a head ring or section 16 ot substantially conical form, and a cylindrical body section 17 interposed 4between said base section and said head section. The two last-named sections may be constructed of Celluloid, while the body port-ion may be of glass or other transparent material. The opposing ends of the base section and the head section are provided with annular recesses or rabbets 18, 18, to receive the corresponding ends of the body section, as shown in Fig. 2. A tie bolt 19 passes throughthe bushing 13 and alining openings 2O and 21 in the base and head sections, respectively, and upper and lower nuts 22, 23 applied to the corresponding ends ot said bolt, serve to hold the parts of the receptacle together and connect it to the base 10. A spring washer 23a is preferably interposed ,Serial No. 697,274.

between the nut 23 and the underside of the base, so that the bolt, while holding the parts of the receptacle in proper, assembled position, is only frictionally clamped in its bearing 13, permitting the bolt andthe receptacle to be rotated on the base by grasping the upper nut or knob 22 of the bolt, which latter thus serves as a spindle as well asatie member.

The `bottom of the base section 15 is of conical form corresponding to the top 171 of the supporting base, and the apex ot said base ring is preferably flat and rests on the bushnstollar le, therevbeng .a slight clearance between the base ring and the supporting base, as shown in Fig. 2, to minimize friction when the receptacle is rotated.

24: represents a plurality of radially disposed wings or partitions arranged within the receptacle and suitably secured to the tie bolt 19, these partitions extending substantially from top to bot-tom of the recep tacle and outward nearly to the wall thereof, as shown in Figs. 2 and 3. Four of such partitions are shown in the drawings, forming a corresponding number of compartments 25 adapted to contain cotton pellets or wade of different sizes. A greater or less number of compartments may obviously be employed, it desired. The head section 16 is provided in its top with a filling opening 26 of substantially the same size as the cross sectional area of one of the compartments 25.

By rotating said head ring or section with reference to the body section and registering its opening with one or another of the compartments, the same can be readily lilled when necessary.

A suitable cap or closure 27 may be removably applied to the head ring for normally closing its opening and preventing dust and dirt from entering the compartments and contaminating their contents.

In its side wall, the base section 15 is provided with a plurality of discharge slots or openings 2S through which the pellets may be withdrawn when desired. These discharge slots are preferably of varying sizes and a set of a given size is disposed opposite each of the several compartments 25. As shown in Fig. 1, the lower portions of these slots are large enough to permit the discharge of the pellets, while their upper ends are preferably pointed or tapered upwardly from a point approximately midway of their length. By shaping the slots in this manner, should two or more pellets adhere when it is desired to use only one, the dentist can push up the upper `pellet or pellets of the cluster behind the constrieted end of the respective slot to prevent its discharge and pei mit withdrawal oiE but a single pellet.

One or more of the slots 28 may be pro vided with a saw-toothed edge 29, as shown in Fig. l, to enable the dentist to Withdraw small bits ot' Cotton from a pellet Without necessitating the removal of the complete pellet for this purpose.

By providing the base ring 15 with a coni cal or sloping bottom, the cotton pellets are directed by gravity toward the discharge slots 28.`

By utilizing a singlebolt for tying the parts of the receptacle together and connecting the latter to the base, the construction of the device is simplified andreduced in cost accordingly. d

Pellets of the desired sizemay be conveniently Withdrawn from the receptacle by simply revolving it to bring the correspond ing compartment to the front side oi the holder. i i

I claim as .my invention:

A dental cotton holder, comprising a sul iiiorting member, a receptacle for cotton peb lets rotatably mounted on said member and including a base section having a conical bottoni and provided in its side Waliopposite the conical bottoni with a series of discharge openings, `the latter being wide enough at one end to pass the pellets and eonstricted at their opposite ends to prevent the discharge olI the pellets, a head section disposed above said base section and provided in itstop with a filling opening, a substantially cylindrical body section interposed between said top and bottom sections, and a tie-bolt extending axially through said supporting member and said several sections. i i

nonnen? J. BERKINSHAW. 

